William p



(No Model.)

W. P, MARTIN.

* STEREOTYPB PLATE HOLDER.

10,361,300 1 PatentedApr. 19, 1887.'

(UNITED STATES WILLIAM I?. MARTIN,

PATENT OFFICE.

OF NEV YORK, N. Y.

STEREOTYPE-PLATE HOLDER.

SPECIFICATION forming part of Letters Patent No. 361,306, dated April 19, 1887.

Application niet .my 2,1896. serial No. 206,954. (No model.)

.To @ZZ whom it may concern.

Beit known that I, WILLIAM P. MARTIN, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Stereotype-PlateHolders, of which the following is a specilication, reference being had therein to the accompanying drawings.

This inventionrelates to stereotype-plate holders, and is more especially intended for use with stereotype or other plates which may require to be adjusted oft' the center, sides, or corners of the holding` or base block.

In the drawings, Figure 1 is a plan or face View ofthe device complete. Fig. 2is a section on line x a', Fig. 1. Y

A indicates the stereotype plate holder, which has preferably awooden body bound with metal; but the body portion may be of metal, if desired.

The letters B B, Ste., indicate grooves in the plate-holder. These grooves extend inwardly from the sides and ends of the plate-holder, but do not extend entirely across the same. The end grooves are in position parallel with the sides of the block or plate-holder, and the side grooves are parallel with the ends of the block. y

In each groove there is a swiveled screwthreaded rod, C, and this rod bears a clamp, D, which engages the edge of the platein usual manner. of a rack-engaging pinion, E, as is well known in the art, to move the clamp Dtoward or away from the medial line of the block. Each screw-rod and clamp is similar to such as have been used heretofore.

There should be,by preference, three clamps and vrods on the side of each block 0I' plateholder and two at each end. Then, if the center of the plate is brought to the proper position by the two middle clamps, the ends can be moved to position a little oblique to the sides of the block, and there retained by the other clamps. This is sometimes necessary in registering plates in the forni, especially in colored work.

It is a frequent practice to nail or tack ste- The scrcwshaft Gis turned by means reotype or electrotype plates to the blocks on which they are mounted, this being considered necessary owing to Variation in the size or proportion of the plates in the form. When so secured, the plates cannot be raised or moved for the purpose of under-laying or to correct false register.

With my device ne adjustment may be made to any possible position on the block and with great facility without disturbing the blocks or plate-holders in the forms.

The face of the plate-holder has an index consisting of a number of lines parallel with the sides and ends. The lines should preferably be ruled at distances apart equal to multiples of some standard typebody-as nonpareil or pica-and may be numbered or lettered.

I am aware that a stereotypeplate holder has been patented in which there are swiveled rods provided with right and left screw-clamps extending across the block. This precludes placing of the stereotype in any other than a central position on the plate-holder.

An extensible or composite plate-holder has also been patented in which the clamps on all sides of the plate-holder were independent, but a portion of the plate-holder was made to move with fthe clamp. This form of plate` holder would not permit of the adjustment of the plate to any but a central position without changing the furniture.

My plate-holder or block can be Iliade up as a page in a form and theplates and size thereof changed at will and adj usted to any desired position on the holder-block without unlocking the form.

I claim-` A stereotype-plate holder having marginal clamps and havingindicating-marksonits face to designate the position of the plate relatively to the margin, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM rf MARTIN.

Vitnesses:

W. A. BARTLETT, M. P. CALLAN. 

